 package com.chenxiang.web.filter;

import java.io.IOException;
import java.util.Date;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

//@Component
public class TimeFilter implements Filter {

   /* (non-Javadoc)
    * @see javax.servlet.Filter#destroy()
    */
   @Override
   public void destroy() {
       System.out.println("time filter destroy");
   }

   /* (non-Javadoc)
    * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
    */
   @Override
   public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
           throws IOException, ServletException {
       System.out.println("time filter start");
       long start = new Date().getTime();
       chain.doFilter(request, response);
       System.out.println("time filter 耗时:"+ (new Date().getTime() - start));
       System.out.println("time filter finish");
   }

   /* (non-Javadoc)
    * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
    */
   @Override
   public void init(FilterConfig arg0) throws ServletException {
       System.out.println("time filter init");
   }

}